During the long drought, the humidity in the rain canopy increased, and the temperature dropped. This period is the flowering and fruit setting period of the green peppers in greenhouses in winter and spring. This situation can easily lead to gray mold and diseases in the flowering period. Failure to take timely preventive measures will lead to large areas. The disease occurred; the flowers fell and the losses were serious.
1, temperature and humidity management: the need to close the skylights in a timely manner to avoid rain directly on the green pepper seedlings, the rain stopped in time to open the window. If the temperature is too low in the morning or in the evening, a layer of plastic film should be added around the shed to increase the temperature. 2, water and fertilizer management: At this time is the best fertilization period, need nitrogen, phosphorus, potassium formula fertilization, sub-topdressing; enhance plant resistance. When topdressing, it can't be applied only to the surface of the earth and it needs to be deepened. Water and fertilizer management can be carried out at the same time. 3, pruning and weeding: timely pruning in accordance with the growing trend, cultivating weeding, improve fruit setting rate. 4. Chemical control: At the beginning of the disease, chlorothalonil, mancozeb, and Rhizoctonia are alternately used to control 2-3 times.
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